Flush valve



Jan. 11 1927.

E. M. BLISS FLUSH VALVE 'Filed May 19, 1926 INVENTOR. er N 19/455,.

' "4TTORNEY.

Patented Jan. 11, 1927.

UNlTED stares EBENEZER M. BLISS, OF RIVERSIDE, CALIFORNIA.

FLUSH VALVE.

Application filed May 19, 1926. Serial No. 110,170.

This invention relates to flush valves for flush tanks, such as employed in toilets.

An important object of the invention is to provide a flush valve of improved construction for flush tanks, which will be held open by the water passing therethrough, until the tank is emptied, whereupon'the valve will be automatically closed. I

Another object is to provide a flush valve in which the valve operating rods and closing springs extend out-side of the valve chamber where they are out of contact with the water and thereby protected from the rusting effect of the water.

A further object is to provide a valve of the character stated whichwill be simple in construction and highly practical and eflicient in operation.

Other objects and advantages will appear hereinafter.

The invention is illustrated in the annexed drawing which forms a part of this specification and in which:

Fig. 1 is a. vertical longitudinal section of my flush valve taken on line 1-1 of Fig. 2.

Fig. 2 is a view, showing in side elevation my flush valve and a flush tank to which the valve is connected, and showing in vertical section the pocket in a wall in which said tank is mounted.

Fig. 3 is a fragmentary view of the valve showingcertain parts in elevation and other parts in vertical section taken on line 33 of Fig. 1.

Corresponding reference characters designate the same parts in all the views.

In the drawing 1 designates a casing constructed in a plurality of sections 2, 3, 4 and 5. The section 2 is the lower end section of the casing and in its upper end is screw seated the lower end of the next section '3 as indicated at 6. In the upper end of section 3 is screw seated the lower end of section 5 as indicated at 7. The upper end of section 4 is provided with an internally threaded neck 8 in which is screw seated the plug section 5, said section-being provided with a thread 9 for engaging the thread in the bore 8. Thesection 4 is provided with the valve inlet 10 which is connected by means of a pipe '11 t0 the lower end of a flush tank 12 which may be mounted in a pocket 13 in a wall. The section 2 is provided in its lower wall with the valve outlet 14 and an outlet pipe. 15 is screw connected at 16to said section in communication with said outlet. I

The section 4: is provided with a lower wall 17 and an upper wall 18 and forms the valve chamber 19. The lower wall 17 of said section is provided with an internally threaded opening 20 to receive an externally threaded valve seat member 21. Said mem her is provided with a valve opening 22 and with valve seat 23' in the upper side of the wall surrounding said opening. A valve stem bearing 24- is formed in the lower part of the member 22. A valve 25 is located within the valve chamber 19 and includes a stem 26 the lower portion of which is slidably mounted in the bearing 24, so that the valve may rise above the seat 2 1 to open position or descend upon said seat into closed position. The lower end wall of the plug section 5 is formed with a bearing 27 in which slides the upper end of the valve stem 26.

The lower end f the valve stem 26 is threaded as indicated at 28 which screws into a threaded socket 29 in the upper end of a valve lifting member 30. A lock nut 31 screws on'said threaded end of the valve stem against the upper end of said valve 1i fting member for holding said member against turning. On the lower end of the lifting member is formed a cam 32. A cross bar 33 is provided with an opening 34 through which extends the upper end of the lifting member 30 and a pin 35 extends through said bar and member to hold the bar on the member. To the outer ends of the cross bar 33 are respectively connected a pair of valve lifting rods 86 which extend upwardly through the casing section 4 outside the valve chamber 19 through the bearings 37, in the lower end of said casing,

bores 38 extending downwardly in said section to the upper end of said bearings, and screw plug bearings 39 seated in the section 4 in the upper end of said bores. Springs 10 surround the rods 36 in the bores 38 hear. at their upper ends against the upper bearings 39 and at their lower ends against the collars 41 secured on the rods,

which springs, through the rods 36, cross bar 33 and lifting member 30 normally hold the valve 25 on its seat in closed position. The upper ends of the rods 36 are connected to a ring 12'which surrounds the neck 8. An inverted yoke 13 straddles the neck 8 and is connected at its ends at 44 to the ring the under side of the casing section t at opposite sides respectively of the valve stem.

26 and lilting member 30, between the lower ends of which hangers is pivoted at 49' a valve lifting lever 50. ()n one end of the lever 50 is secured a battle plate 51 and a weight 52 adjustably secured on the other end of said lever. A roller is journaled on the upper side o t the lever 50 and is normally engaged by the cam 32- under the influence of the springs 36 lo hold the lever in its lowu' horizontal position. The weight 52 is secured on the lever as hereinbefore described, by being mounted upon the pin 56, the pinv 56 is in turn slidabl-y positioned in the ots El, and clamped in adjustable po, ton by the locking nuts The operation of the invention is as follows:

The valve 25 being closed and the levers l5 and 50 in horizontal position, to open the valve, the lever 45 is raised and the cam 46, engaging the roller 47, raises the valve 25 off its seat, through the medium of the yoke 4L3, ring 42, rods 36, bar 33, lifting member 30 and valve stem 26, during which operation the springs 38 are compressed and the cam 32 raised above the roller 53. Vat-er then rushes from the tank 12 through the pipe 11 and inlet l0 into the valve chamber 19', through valve opening 20 into the lower part of the valve casing and out through the outlet 14 and pipe 15, during which imeratioi-i the pressure of the water against the baffle plate 5i swings the lever 50 counter clockwise and the roller 53 directly under the cam 32, (see dotted line position Fig. l) which holds the valve oil its seal until all the water passes out of the tank 12 througlrthe valve, after w the springs 38 force the rods 36. bar 33,

member an lthe valve down until the valve seats itself on the seat 23 and the level-J do and are swung back into normal horizontal position. \Vhile the valve is held raised by the engagement of the roller 53 with the earn 3 the lever t3 is held vertical by the enga ement of its cam 46 with the roller When it is found that the pressure of water against the baffle plate Bl is too strong, or too weak, the leverage ot the weight from the pivot l9 may be adjusted by sliding; the said weight 52 upon the pin 56 in the slots 54:, and then locking the nuts 55 in the adjusted position upon the pin 56 against the lever 50, to control the pressure of water flowing against the plate 51, as hereinbefore described.

Having; thus described my invention what I claim is:

1. In a flush valve, a casing formed with a valve chamber in the upper part thereof and provided with an inlet leading into said chamber, a valve opening leading from said chamber, and an outlet, a valve mounted to seat in said opening, valve lifting rods extending outside said valve chamber, collars on said rods, springs on, said rods engaging said collars for normally holding said valve on its seat, a yoke, means connectingsaid yoke and the outer ends of said rods, a cam pivotedon said yoke, and a roller on the upper, end of the casing to be engaged by said cam for lifting the valve off its seat.

In a flush valve, a casing provided with a valve chamber in the upper part thereof and provided with an inlet leading into said chamber, the valve opening;- leading from saidchanrbor into the lower part of the casing, and an outlet leading from the lower end of the casing, a valve mounted to seat in said opening, means for normally holding the valve onits seat, means for lifting the valve off its seat, a liftinganeniber connected to the valve and extending in the lower part of said casing, a can; on the lower end of said lifting member, a lever in the lower part of the casing, a roller on said lever engaged by said cam to hold the lever in its initial position when the valve is on its seat, and a battle plate on said lever to be acted upon by the water passing through the valve when the valve is lifted off its seat, to, hold the lever in position with its roller engaging said cam to hold the valve off its seat until water ceases to enter the valve.

3.]11 a flush valve, a casing: provided with a valve chamber in the upper part thereof and provided with an inlet leading into said chamber, the valve opening: leading from said chamber into the lower part the casing. and an outlet leading from the lower end of the casing, a valve mounted to seat in said opening, a lifting; member connected to said valve and extending into the lower part of said casing, a cross bar connected to said lifting member, valve lifting rods extending outside the valve bei, collars on said rods, springs on rods engaging said collars for non my holding the valve on its yoke, ine ns connecting said yoke and the upper en of said rods, a cam pivi'it d on said. l roller on the upper end of the c: be engaged by said cam for liftin t off its seat, a cam on the lower one, of sai lifting member, a lever in the lower part of the casing, a roller on said lever engaged by said cam to hold the leverin its initial position when the valve 1s on. its seat, and a baffle plate on said lever to be acted upon by the "water passing through the valve when the valve is lifted oii: s seat to hold the lever in position with its roller engaging said cam to hold the valve oil its seat until water ceases to enter the valve.

4. In a flush valve, a casing formed with a valve chamber in the upper part thereof and provided with an inlet leading into said chamber, a valve opening leading from said chamber, and an outlet, a valve mounted toseat in said opening, the casing being provided with bores extending downwardly therein, valve lifting rods extending through said bores, springs on said rods in said bores, collars on said rods engaged by the lower ends of said springs, plugs screw seated in the upper ends of said bores through which said rods extend and which are engaged by the upper ends of said springs for normally holding the valve on its seat, a yoke, means connecting said yoke to the upper ends of said valvelifting rods, a cam pivoted on said yoke, and a roller on the upper end of the casing to be engaged by said cam for lifting the valve off its seat.

5. In a flush valve, a casing formed of a plurality of sections screw connected together, one of said sections being formed with a valve chamber, an inlet leading into said chamber, a valve opening leading from said chamber into the section below, and a neck extending upwardly therefrom, in which neck is screw seated the uppermost section, a valve in said valve chan'lber for seating in said valve opening, valve lifting rods extending through said valve chamber section outside said chamber, means connecting the rods and the valve, collars on the rods, springs on the rods engaging said collars to normally hold the valve on its seat, a yoke, means connecting said yoke and the upper ends of said rods, a cam on said yoke, a roller engaged by said cam for lifting said valve off its seat, the lowermost section having an outlet, a lifting member connected to the valve and extending in the casing below the valve chamber, a cam on the lower end of said lifting member, hangers secured to the valve chamber section, a lever pivoted to said hangers, a roller on said lever engaged by said cam to hold the lever in its normal position when the valve is closed, and a baffle plate on said lever to be acted upon by the water passing through the valve when the valve is lifted off its seatto hold the lever in position with its roller engag ng said cam to hold the valve off its seat until water ceases to rush through the valve.

6. In a flush valve, a casing formed with a valve chamber in the upper part thereof and provided with an inlet leading into said chamber, a valve opening leading from said chamber, and an outlet, a valve mounted to seat in said opening, valve lifting rods extending outside said valve chamber, means for normally holding said Valve on its seat, a yoke, means connecting said yoke and the outer ends of said rods, a cam mounted on said yoke, a bafiie plate in said outlet to be actuated by the water passing through the valve, when the valve is lifted off its seat to hold the cam in position, to hold the valve off its seat untilthe rush of water ceases to pass through the valve, and an adjustable balance means adapted to control the pressure of water against said battle plate.

7. In a flush valve, a casing formed with a valve chamber in the upper part thereof and provided with an inletleading into said chamber, a valve opening leading from said chamber, an auxiliary chamber in the lower part of said casing in communication with said valve opening, and an outlet leading from said auxiliary chamber, a valve mounted to seat in said opening, valve lifting rods extending outside said casing from said auxiliary chamber, means for normally holding said valve on its seat, a lifting member adjustably secured to the lower side of said valve, a cam mounted on said lifting member, a lever operatively suspended in said auxiliary chamber, a yoke connecting said lifting member and said valve lifting rods, a baffle plate secured to said lever over said outlet to be actuated by the water passing through the valve when the valve is lifted off its seat to hold the cam in position, to hold the valve off its seat until the rush of water ceases to pass through the valve, an adjustable balance means adapted to control the pressure of water against the baffle plate, and a means for lifting the valve lifting rods and for holding the valve in an open position until the said battle plate is actuated to close said valve.

8. In a flush valve, a casing formed with a valve chamber in the upper part thereof and provided with an inlet leading into said chamber, a valve opening leading from said chamber, and an outlet, a valve mounted to seat in said opening, an auxiliary valve chamber, valve lifting rods extending outside said auxiliary valve chamber, means for normally holding said valve on its seat, a yoke, means connecting said yoke and the outer ends of said rods, and a means for lifting the valve lifting rods and for holding the valve in an open position until the flow of water through said valve opening ceases.

In testimony whereof I hereunto atlix my signature.

EBENEZER M. BLISS.

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